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subspace antialiasing

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subspace antialiasing Szasz Pal 11 Sep 19:21
  subspace antialiasing Sven Neumann 12 Sep 14:00
   subspace antialiasing Szasz Pal 12 Sep 15:01
Szasz Pal
2004-09-11 19:21:29 UTC (over 19 years ago)

subspace antialiasing

Hi!

First of all thanks for the replies for the split-image thread. I have another question. First I will present you what I want to do. I read about the SubSPACE technique here:

http://www.fooware.se/english/index.php?show=games&selection=spinner&subselection=tech

The main idea is that pixels are made of the three componets: red green blue.
On some displasy (like mobile phone lcd screens) one could make advantage of this by making sub-pixel anti-aliased images. Suppose I want to draw a diagonal white line on black background. On the following image the left side how it is done in the default way. On the right side is how would it be done, if the drawer would take advantage of the RGB components:

http://www.spacesoftwarestudio.com/example/pixels.png

To see the effect, it is better to try the following image: simply send it to your phone. Rhomb 1 does not use the subspace technique. Rhomb 2 and 3 use it, the difference is that rhomb 2 is for LCD screens with RGB order, and rhomb 3 is for the BGR order (like my Nokia 3650):

http://www.spacesoftwarestudio.com/example/spa.png

And now the question: how could I make such anti-aliasing easier? I made the above image by drawing it pixel-by-pixel. I'm thinking it would be easier, if I draw the image 3 times grater resolution, and then I could apply a filter, which reduces the resolution by three and adjust the RGB components accordingly.

What do you say?

Best Regards, Szasz Pal
------------
Space Software Studio

Sven Neumann
2004-09-12 14:00:43 UTC (over 19 years ago)

subspace antialiasing

Hi,

"Szasz Pal" writes:

And now the question: how could I make such anti-aliasing easier? I made the above image by drawing it pixel-by-pixel. I'm thinking it would be easier, if I draw the image 3 times grater resolution, and then I could apply a filter, which reduces the resolution by three and adjust the RGB components accordingly.

Yes, that is how it is done. Usually there is also some filtering involved to reduce color fringes. But in general you draw with the horizontal resolution increased by the factor 3. The concept is described at http://grc.com/cleartype.htm

Sven

Szasz Pal
2004-09-12 15:01:22 UTC (over 19 years ago)

subspace antialiasing

Hi!

Yes, that is how it is done. Usually there is also some filtering involved to reduce color fringes. But in general you draw with the horizontal resolution increased by the factor 3. The concept is described at http://grc.com/cleartype.htm

Thanks for the link, it's great.
So, is this implemented as a plugin for Gimp? Or volunteers are wanted ;-)

Best Regards, Szasz Pal
------------
Space Software Studio